If the mean of this distribution is 13.7, which could NOT be the median?

A) 9
B) 14
C) 16
D) 18

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

If value of cos330° is √3/2 then find tan165°.

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.